Submarine boat



Mmh 1o, 1931. R. c. slMsoN SUBMARINE l BOAT Filed Dec. 2l, 1926 m 0j)\ lllllllllllll i; This Compartment,

Patented Mar. 10, 1931 narran Ystares Pix-rear Price ROBERT C. SIMPSON, OF GROTON, CONNECTICUT, ASSIGNOQR TO ELECTRIC BOAT COM- PANY, OF GROTON, CONNECTICUT, A CORPORATION 0F NEW JERSEY SUBMARINE BOAT Application led Decemberl, .1926.v Serial No. 156,130.

ie In accordance with my invention, I provide an appendage for the hull of a submarine boat at the bow thereof for augmenting the buoyancy of the bow and causing it to ride the waves instead of plunging` through l5 them. This buoyant appendage can, in the broader aspects of the invention, be disposed in any suitable manner to exert a lifting ef fect on the bow of the boat so as to cause the same to ride the waves, but, more specifically,

se I arrange this structure as an additional compartment mounted upon the upper part of the hull at they bow of the boat, forming, in effect, a superstructure able to withstand the same submergence pressure as the hull itself.

disposed to eXtend forwardly beyond the bow to the cut-water and having its forward portion disposed above the upper portion of the bow, so as to per form its function as above pointed out, is

:3i suitably connected with the interior ot' the boat, adding useful space, for instance as sleeping quarters for the crew.

In the drawings:

Figure l is a semi-diagrammatic longitudi- S nal sectional view through the bow portion of a submarine boat embodying my invention; and

Fig. 2 is a transverse sectional view through the hull and the buoyant compartment.

l0 The boat is generally of known construction and .includes the hull l and a superstructure 2.

Upon the forward portion of the hull I mount a watertight compartment 3, this com- 45 partment being elongated and of substantially circular cross-section and being arranged with its aXis fore-and-aft and in the vertical plane of the keel. This compartment, in the nature of an appendage to the 59 hull, and of such strength as to withstand the same submergence pressure as the hull, extends forwardly of the hull, tapering somewhatto the cut-water 5, its lower wall 3a being disposed at a y decided inclination as shown. Y

The compartment 3 is provided aft with a hatch 7, of such size as to permit'torpedoes to be introduced therethrough, and also with hatch 8 leading down into the hull for Vthat and other purposes. 'lhese hatches also provide means of ingress and egress as will be clear.

lVith this arrangement, the compartment 3 adds materially to the useful space, for

storage purposes and for use as quarters for thecrew. With this objectin view, I provide along each side of the major portion of this compartment, a plurality of bunks l0, releasing for other purposes the hull space ordinarily used for this purpose.

l/Vith the compartment 3 constructed and mounted in the manner illustrated and described, the normal buoyant effec-t at the bow is greatly augmented, the additional buoyancy thus provided being suliicient to cause v the bow to ride the waves instead of plunging y through them.

lVhat I claim is l. In a submarine boat, a superstructure on the hull, and a water-tight compartment above the bow of the hull and secured thereto, said compartment forming a continuation of the super-structure and having its forward portion spaced above the forwardmost compartinent of the hull.

2. In a submarine boat including a hull l and a superstructure mounted thereon, a water tight compartment above the bow of the hull and secured thereto, said compartment projecting forwardly beyond the superstructure and extending beyond the outline of the upper portion of the hull.

3. In a submarine boat including a hull and a superstructure mounted thereon, a water tight compartment above the bow of the hull and secured thereto, said compartment projecting forwardly beyond the superstructure and having its forward port-ion above and spaced away from the forwardmost compartment of the hull.

el. In a submarine boat including a hull and a superstructure mounted thereon, a Water tight compartment above the boys7 of the hull and secured thereto, said compartment opening into and projecting forwardly beyond the superstructure and beyond the main portion ofthe hull.

5. In a submarine boat including a hull and a superstructure mounted thereon, a watertight compartment above the bow-of the hull and secured thereto, said compartment projecting forwardly beyond the superstructure and beiirg` disposed to enter the Waves ahead of the main hull and to exert a lifting` effect enabling the boat to ride the Waves when the boat running afloat.

(i. In ak submarine boat including a hull and a superstructure mounted thereon, a Water tight compartment of substantially circular cross-section and adapted to withstand full sulmiergence pressure, said compartment being` above the bow of the hull and secured thereto. the compartment projecting forwardly beyond the superstructure and being disposed to enter the Waves ahead of the main hull and to exert a lifting eiect enabling the boat to ride the Waves when runningi afloat- In witness whereof, I hereunto subscribe my name this 17th dayrof December, 1926.

ROBERT C. SIMPSON. 

